While I think that many websites don't need much JS in the first place, you pretty easily hit a degree of complexity where a package manager is very useful. And

While I think that many websites don't need much JS in the first place, you pretty easily hit a degree of complexity where a package manager is very useful. And the whole build thing is in part precisely to keep load times down. (That said, I'm a front-end dev who is leaning more and more towards good old back-end rendering and something like TurboLinks perhaps, for many situations where previously I'd automatically go for React or Vue.)